DMM6S68K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The DMM6S68K-F is a 0.068 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 630V DC voltage rating and ±10% tolerance. This polyester metallized radial capacitor operates across a temperature range of -55°C to 125°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 1181 pieces in stock inventory. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits voltage or dimensional variations within acceptable engineering parameters.

Substiute Parts

DMM6S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1273DMM6S68K-F Datasheet

Current PartRFQ

DME6S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 2484DME6S68K-F Datasheet

DirectRFQ

DME10S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 3465DME10S68K-F Datasheet

SimilarRFQ

QXK2J683KTP

NichiconIn Stock: 1237QXK2J683KTP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DMM6S68K-F are classified based on strict adherence to the following electrical and mechanical parameters:

Direct Equivalents (Same Electrical Specifications): Parts that maintain identical capacitance (0.068 µF), tolerance (±10%), voltage rating (630V DC / 250V AC), dielectric material (polyester metallized), and operating temperature range (-55°C to 125°C) are classified as direct equivalents. These parts differ only in packaging format, lead spacing, or physical dimensions while maintaining full functional compatibility.

Voltage-Rated Substitutes (Higher Voltage Rating): Parts with identical capacitance, tolerance, and dielectric material but with elevated DC voltage ratings (1000V or higher) are acceptable substitutes when the application circuit permits higher voltage-rated components. These parts provide enhanced voltage margin and are mechanically compatible when lead spacing matches.

Manufacturer Alternatives (Different Manufacturer, Equivalent Specifications): Parts from alternative manufacturers with matching electrical specifications and compliance certifications (ROHS3, REACH Unaffected) are acceptable when supply from the primary manufacturer is unavailable.

Key Parameters Determining Substitution Eligibility:

• Capacitance value: 0.068 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric: Polyester, Metallized (exact match required)
• Mounting: Through Hole Radial (exact match required)
• Lead Spacing: 0.591" (15.00mm) or compatible spacing
• Voltage Rating: 630V DC minimum (higher ratings acceptable)
• Temperature Range: Must cover -55°C to 125°C or equivalent
• Compliance: ROHS3 Compliant, REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

DME6S68K-F (Direct Equivalent - Preferred Substitute): The DME6S68K-F is a direct electrical equivalent to the DMM6S68K-F, maintaining identical capacitance, tolerance, voltage rating, dielectric material, and operating temperature range. Both parts are manufactured by Cornell Dubilier Electronics and comply with ROHS3 and REACH requirements. The DME6S68K-F features identical lead spacing (0.591" / 15.00mm) for direct PCB compatibility. Physical dimensions differ slightly (0.728" x 0.236" versus 0.709" x 0.335"), with the DME6S68K-F offering a more compact profile. Inventory availability is higher (2442 pieces), making this the primary substitute when DMM6S68K-F stock is depleted. No design modifications are required for substitution.

DME10S68K-F (Voltage-Rated Substitute): The DME10S68K-F maintains identical capacitance (0.068 µF), tolerance (±10%), dielectric material (polyester metallized), and operating temperature range (-55°C to 125°C) as the DMM6S68K-F. The DC voltage rating is elevated to 1000V, providing enhanced voltage margin for applications where the circuit design permits higher-rated components. Lead spacing differs (0.689" / 17.50mm versus 0.591" / 15.00mm), requiring PCB hole pattern verification before substitution. Physical dimensions are larger (0.827" x 0.335" with 0.768" seated height), necessitating clearance validation in confined mounting spaces. This part is suitable only when circuit topology and PCB layout accommodate the increased lead spacing and physical size. Inventory availability is highest (3384 pieces).

QXK2J683KTP (Manufacturer Alternative): The QXK2J683KTP is manufactured by Nichicon and provides electrical equivalence to the DMM6S68K-F with matching capacitance (0.068 µF), tolerance (±10%), voltage rating (630V DC / 250V AC), dielectric material (polyester metallized), and lead spacing (0.591" / 15.00mm). This part is ROHS3 compliant and REACH unaffected. The operating temperature range is -40°C to 105°C, which does not extend to the full -55°C lower limit of the DMM6S68K-F. This limitation restricts use to applications where the minimum operating temperature does not fall below -40°C. Physical dimensions are compact (0.728" x 0.228" with 0.492" seated height), offering space advantages in dense PCB layouts. Substitution is valid only when the reduced temperature range is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can DME6S68K-F be used as a direct replacement for DMM6S68K-F without PCB modifications?

A: Yes. The DME6S68K-F is a direct electrical equivalent with identical capacitance (0.068 µF), tolerance (±10%), voltage rating (630V DC), dielectric material (polyester metallized), and lead spacing (0.591" / 15.00mm). No PCB modifications are required. Physical dimensions differ slightly, but the compact profile of the DME6S68K-F does not create compatibility issues in standard through-hole applications.

Q: Is DME10S68K-F suitable for all applications requiring DMM6S68K-F?

A: DME10S68K-F is electrically compatible for applications where the circuit design permits a 1000V DC rated component. However, the increased lead spacing (0.689" versus 0.591") and larger physical dimensions (0.827" x 0.335" with 0.768" seated height) require verification of PCB hole patterns and mounting clearances. Substitution is valid only when these mechanical constraints are satisfied.

Q: What is the temperature range limitation of QXK2J683KTP compared to DMM6S68K-F?

A: The QXK2J683KTP operates from -40°C to 105°C, whereas the DMM6S68K-F operates from -55°C to 125°C. The QXK2J683KTP does not meet the lower temperature specification of -55°C. Substitution is acceptable only for applications where the minimum operating temperature remains above -40°C and the maximum does not exceed 105°C.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (DME6S68K-F, DME10S68K-F, and QXK2J683KTP) are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the DMM6S68K-F.

Q: What is the primary difference between DMM6S68K-F and DME6S68K-F?

A: Both parts are electrically identical with the same capacitance, tolerance, voltage rating, and dielectric material. The primary difference is the series designation (DMM versus DME) and packaging format (DMM6S68K-F is packaged individually, while DME6S68K-F is packaged in bulk). Physical dimensions are slightly different, with DME6S68K-F offering a more compact profile.

Q: Can QXK2J683KTP be substituted in high-temperature applications?

A: No. The QXK2J683KTP maximum operating temperature is 105°C, which is 20°C below the DMM6S68K-F specification of 125°C. For applications requiring operation at temperatures above 105°C, QXK2J683KTP is not suitable. Use DME6S68K-F or DME10S68K-F instead.

Q: What inventory considerations should guide substitute part selection?

A: DME10S68K-F has the highest inventory availability (3384 pieces), followed by DME6S68K-F (2442 pieces) and QXK2J683KTP (1188 pieces). When supply chain continuity is critical, DME10S68K-F provides the largest stock buffer, provided mechanical and electrical constraints are satisfied. For direct equivalence with minimal design review, DME6S68K-F is the optimal choice.

Q: Are there any compliance or certification differences between substitute parts?

A: All substitute parts maintain ROHS3 compliance and REACH unaffected status identical to the DMM6S68K-F. No compliance differences exist. All parts are suitable for applications requiring these regulatory certifications.